The LC4D18AQ7 is a direct-on-line (DOL) starter from the TeSys LC4-D range, combining a fuse disconnector and a contactor in one plate-mounted unit. It's rated for AC-3 duty at 18 A, which means it's sized for switching three-phase squirrel-cage motors under starting and running conditions — the standard category for motor loads. Coil is 380 V AC 50/60 Hz, so if your control circuit runs at that voltage, this pulls straight in without a transformer. The motor power table covers several common line voltages: 10 kW at 500 V, 9 kW at 415 V or 440 V, 7.5 kW at 380–400 V, and 4 kW at 220–230 V.
Mounts to a plate — not a DIN rail — so plan for screw-down fixing on a backplate or sub-panel. Dimensions are 173 mm high, 86 mm wide, 98 mm deep. That's a compact footprint for a combined disconnector and contactor; leaves room alongside for the overload relay and control wiring.
Listed as active in production. No end-of-life notice or successor order code has been issued.